AT-model cell phones

[docydoc]

Hi to all!

Am I right? If I use a old fashioned DAU-9P cable and connect a simple
terminal -
shouldn't the phone act as a normal modem e.g. responding to
AT-commands?

I tried ATZ as basic and simple command but never got a response?
Can someone help me to make things clear?

I want to access the cell phone (have different type available: 6150,
6210, 6100)
via µC. - Thanks


Pierre